ASoC: stm: depend on COMMON_CLK to fix compile tests

ASoC: stm: depend on COMMON_CLK to fix compile tests

The STM32 I2S drivers use Common Clock Framework thus they cannot be
built on platforms without it (e.g. compile test on MIPS with RALINK and
SOC_RT305X):

    /usr/bin/mips-linux-gnu-ld: sound/soc/stm/stm32_i2s.o: in function `stm32_i2s_hw_params':
    stm32_i2s.c:(.text+0x1870): undefined reference to `clk_set_parent'

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201116175133.402553-3-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>